PROJ00507

• Contract/PO #: C153513
• Contractor Name: Ute Mountain Ute Tribe
• Water District: 0
• County: Montezuma
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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Table 3.2
Estimated Towaoc Pipeline Flows for 1000 af/year
(in cfs)

Average
Uni form Flow

Monthly
Average Peak

Oaily
Average Peak

lO-Oay
Average Peak

1.38

2.54

2.79

3.02

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A second approach to design flow capacity selection was made by selectinq some
level of population expansion that would not use the entire 1,000 af and then
allocate the remaining volume to potential industrial use. Industrial uses
a1 so requi re peaki ng factors whi ch are greatly dependent on the type of
industry bei ng served. We have assumed that industri a1 water woul d requi re a
10-day peaking factor of 1.5.

To establish a reasonable lower limit of design flow, we have assumed that it
is desirable to plan for doubling of the Towaoc population as well as
i ncreasi ng the use rate from around 94 gpcd to the previ ously establ i shed
200 gpcd. In effect this would quadruple the total annual municipal water
demand over the existing use. It is also assumed that adequate termial
storage over and above fire storage requirements would allow designing for a
10-day peak.

The annual municipal demand provided would be:

Annual Water Volume = 2n6 people x 200 gal/person/day x 365 days
325,800 qa1 per af

Annual Water Volume = 596 af

This would be the municipal allocation and for a 10-day peaking factor would
require a peak design flow of:

596 af x 2.02 = 1.66 cfs
724 af /cfs

3-7

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